/*

SDL_framerate.h: framerate manager

Copyright (C) 2001-2011  Andreas Schiffler

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

   1. The origin of this software must not be misrepresented; you must not
   claim that you wrote the original software. If you use this software
   in a product, an acknowledgment in the product documentation would be
   appreciated but is not required.

   2. Altered source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

   3. This notice may not be removed or altered from any source
   distribution.

Andreas Schiffler -- aschiffler at ferzkopp dot net

*/

#ifndef _SDL_framerate_h
#define _SDL_framerate_h
#include "tipos_glob.hpp"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

	/* --- */

#ifdef APPLE
	#include "/opt/local/include/SDL/SDL_image.h"
#else
	#ifdef LINUX
		#include <SDL/SDL_image.h>
	#else
		#include "SDL_image.h"
	#endif
#endif

	/* --------- Definitions */

namespace bp
{

/*!
\brief Highest possible rate supported by framerate controller in Hz (1/s).
*/
#define FPS_UPPER_LIMIT		200

/*!
\brief Lowest possible rate supported by framerate controller in Hz (1/s).
*/
#define FPS_LOWER_LIMIT		1

/*!
\brief Default rate of framerate controller in Hz (1/s).
*/
#define FPS_DEFAULT		30

/*! 
\brief Structure holding the state and timing information of the framerate controller. 
*/
	typedef struct {
		Uint32 framecount;
		float rateticks;
		Uint32 lastticks;
		Uint32 rate;
		Uint32 time;
	} FPSmanager;

	/* ---- Function Prototypes */

#ifdef _MSC_VER
#  if defined(DLL_EXPORT) && !defined(LIBSDL_GFX_DLL_IMPORT)
#    define SDL_FRAMERATE_SCOPE __declspec(dllexport)
#  else
#    ifdef LIBSDL_GFX_DLL_IMPORT
#      define SDL_FRAMERATE_SCOPE __declspec(dllimport)
#    endif
#  endif
#endif
#ifndef SDL_FRAMERATE_SCOPE
#  define SDL_FRAMERATE_SCOPE extern
#endif

	/* Functions return 0 or value for sucess and -1 for error */

	SDL_FRAMERATE_SCOPE void SDL_initFramerate(FPSmanager * manager);
	SDL_FRAMERATE_SCOPE int32_t SDL_setFramerate(FPSmanager * manager, Uint32 rate);
	SDL_FRAMERATE_SCOPE int32_t SDL_getFramerate(FPSmanager * manager);
	SDL_FRAMERATE_SCOPE int32_t SDL_getFramecount(FPSmanager * manager);
	SDL_FRAMERATE_SCOPE void SDL_framerateDelay(FPSmanager * manager);
	SDL_FRAMERATE_SCOPE Uint32 SDL_getTime(FPSmanager * manager);

} // namespace bp
	/* --- */

	/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}  // extern "C"
#endif

#endif				/* _SDL_framerate_h */
